<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<style>
    #myDiv{
        width: 300px;
        height: 260px;
        background: lightgoldenrodyellow;
        margin: 50px auto 0px;
    }
    form{
        width: 222px;
        height: 250px;
        margin: 0px auto 0px;
        padding-top: 10px;
    }
    form>div{
        margin-top: 20px;
    }
    #wu{
        width: 50px;
        height: 60px;
        margin: 20px auto 0;
    }
</style>
<body>
<div id="myDiv">
    <form action="insertStudent" method="get">
        <div id="yi">姓名：<input type="text" name="name" required placeholder="请输入姓名" autocomplete="off"/></div>
        <div id="er">
            性别：<input type="radio" name="sex" value="男" checked/>男
            <input type="radio" name="sex" value="女"/>女
        </div>
        <div id="san">年龄：<input type="text" name="age" required placeholder="请输入年龄" autocomplete="off"/></div>
        <div id="si">生日：<input type="date" name="birthday" required/></div>
        <div id="wu"><input type="submit" value="提交"/></div>
    </form>
</div>
</body>
</html>